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Pool Chemistry
Pool Chemistry
pH and Alkalinity
LSI and Calcium Issues
Water Clarity Issues
Chlorination, Disinfection and Oxidation
Phosphates
Cyanuric Acid (CYA)
Vinyl Liner and Fiberglass Pools
Orenda App
How to use the Orenda App
The Orenda Calculator™
Orenda on Android
Orenda Products
PR-10,000 | Phosphate Remover Concentrate
SC-1000 | Scale & Metal Control
CV-600 & CV-700 | Enzymes
CE-Clarifier | Chitosan Clarifier + Enzymes
Spa Products
Health & Safety
Distribution
Orenda product line
Pool Chemicals
LSI Adjusters
Sanitizers
Water testing
Pool Circulation and Filtration
Circulation
Filtration
Orenda Startup™
Cement Chemistry
Frequently Asked Questions (FAQ)
Orenda Academy™
Orenda Philosophy
Back to home
Help Center
Pool Chemistry
Pool Chemistry
pH and Alkalinity
LSI and Calcium Issues
Water Clarity Issues
Chlorination, Disinfection and Oxidation
Phosphates
Cyanuric Acid (CYA)
Vinyl Liner and Fiberglass Pools
Orenda App
How to use the Orenda App
The Orenda Calculator™
Orenda on Android
Orenda Products
PR-10,000 | Phosphate Remover Concentrate
SC-1000 | Scale & Metal Control
CV-600 & CV-700 | Enzymes
CE-Clarifier | Chitosan Clarifier + Enzymes
Spa Products
Health & Safety
Distribution
Orenda product line
Pool Chemicals
LSI Adjusters
Sanitizers
Water testing
Pool Circulation and Filtration
Circulation
Filtration
Orenda Startup™
Cement Chemistry
Frequently Asked Questions (FAQ)
Orenda Academy™
Orenda Philosophy
Pool Chemistry
Let's talk water chemistry
pH and Alkalinity
What is pH?
Why does Alkalinity rise in a pool using a CO2 feeder for pH control?
How to Lower Alkalinity in a Pool
Why are calcium and total alkalinity measured in ppm CaCO3?
How to lower Total Alkalinity without lowering pH too much
Can I maintain high alkalinity (>120 ppm) and low calcium hardness (<200 ppm) if it keeps my LSI balanced?
Does alkalinity impact chlorine?
See more
LSI and Calcium Issues
What is the LSI?
What is calcium hardness?
I have calcium crystals in my pool. What do I do?
Why are there white flakes in my pool?
How to manage Hard Water out of the tap
See more
Water Clarity Issues
I have foaming in my spa, what can I do?
Why is my pool green?
Chlorination, Disinfection and Oxidation
My pool will not hold chlorine. Why?
Sanitize vs. Disinfect vs. Oxidize | The Roles of Chlorine in Swimming Pools
What is ORP?
What is ORP suppression in saltwater pools?
What is Contact Time (CT)?
Does PR-10,000 affect ORP?
What is black algae (cyanobacteria)?
See more
Phosphates
How to know if you have phosphates in your pool
I tested zero phosphates, but PR-10,000 still clouded my pool. Why?
My tap water tested zero phosphates, but my pool has phosphates. Why?
Cyanuric Acid (CYA)
What is the ideal Cyanuric Acid (CYA) level for a swimming pool?
What increases Cyanuric Acid (CYA) in a swimming pool?
Do Orenda products reduce Cyanuric Acid (CYA)?
Vinyl Liner and Fiberglass Pools
What is fiberglass "chalking", and what causes it?
